Specification released on Nov. 14, 2008.First silicon should be available in late 2009 with early production in 2010.Separate Tx & Rx ChannelsLeverages PCI Express Gen II electricalsOptimized Power EfficiencyNo device pollingLower active & idle power requirementsBackward compatible with USB 2.0 “to the User”Devices interoperate with USB 2.0 platformsHosts support USB 2.0 legacy devices